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Hierarchically interconnected porous scaffolds for phase change materials with improved thermal conductivity and efficient solar-to-electric energy conversion

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Abstract

An ice-templating self-assembly strategy and a vacuum impregnation method were used to fabricate polyethylene glycol (PEG)/hierarchical porous scaffold composite phase change materials (PCMs). Hierarchically interconnected porous scaffolds of boron nitride (BN), with the aid of a small amount of graphene oxide (GO), endow the composite PCMs with high thermal conductivity, excellent shape-stability and efficient solar-to-electric energy conversion. The formation of a three-dimensional (3D) thermally conductive pathway in the composites contributes to improving the thermal conductivity up to 2.36 W m−1 K−1 at a relatively low content of BN (ca. 23 wt%). This work provides a route for thermally conductive and shape-stabilized composite PCMs used as energy storage materials.

Graphical abstract: Hierarchically interconnected porous scaffolds for phase change materials with improved thermal conductivity and efficient solar-to-electric energy conversion

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Publication details

The article was received on 25 Jul 2017, accepted on 29 Oct 2017 and first published on 30 Oct 2017


Article type: Communication
DOI: 10.1039/C7NR05449A
Citation: Nanoscale, 2017, Advance Article
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    Hierarchically interconnected porous scaffolds for phase change materials with improved thermal conductivity and efficient solar-to-electric energy conversion

    J. Yang, P. Yu, L. Tang, R. Bao, Z. Liu, M. Yang and W. Yang, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR05449A

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